Figure 7.

(a) ¹H NMR spectra of the depolymerization reaction of poly(methyl methacrylate)-dithiobenzoate (5 mM of repeat unit and 120 °C in 1,4-dioxane). (b) Depolymerization of poly(oligo(ethylene glycol) methyl ether methacrylate), repolymerization into a hydrogel, and subsequent depolymerization of the hydrogel. (c) depolymerization of heat-sensitive polymers poly(tert-butyl methacrylate) and (d) poly(glycidyl methacrylate). (a) and (b) are adapted from ref (46). Copyright 2022 American Chemical Society. (c) and (d) are adapted from ref (58). Copyright 2022 American Chemical Society.